import std.algorithm, std.conv, std.range, std.stdio, std.string;
import std.container; // SList, DList, BinaryHeap
import std.bigint;    // BigInt
import std.regex;     // Regex

void readV(T...)(ref T t){auto r=readln.splitter;foreach(ref v;t){v=r.front.to!(typeof(v));r.popFront;}}
T[] readArray(T)(size_t n){auto a=new T[](n),r=readln.splitter;foreach(ref v;a){v=r.front.to!T;r.popFront;}return a;}
T[] readArrayM(T)(size_t n){auto a=new T[](n);foreach(ref v;a)v=readln.chomp.to!T;return a;}

const inf = BigInt(1L<<62);

void main()
{
  auto s = readArray!long(26);
  string t; readV(t);

  auto d = BigInt(1);
  foreach (i, si; s) {
    d *= calc(BigInt(si), t, cast(char)('a'+i));
    if (d >= inf) {
      writeln("hel");
      return;
    }
  }

  writeln(d);
}

auto calc(BigInt s, string t, char c)
{
  auto y = t.matchAll(regex(c.to!string ~ '+')).map!((m) => m[0].length.to!int).array;
  auto ny = y.length.to!int;
  if (y.empty) return BigInt(1);
  if (s < y.sum) return BigInt(0);

  if (s > 10^^7) {
    if (ny == 1) {
      if (y[0] == 1) return s;
      if (y[0] == 2) return s*(s-1)/2;
    } else if (ny == 2) {
      if (y[0] == 1 && y[1] == 1) return s/2*(s-s/2);
    }
    return inf;
  }

  auto r = new Rat[](ny);
  foreach (i, yi; y)
    r[i] = Rat(BigInt(yi+1), BigInt(1), yi+1, yi);

  auto h = heapify(r), d = BigInt(1);
  foreach (i; 0..(s-y.sum).to!int) {
    auto ri = h.front;
    d = d * ri.num / ri.den;
    if (d >= inf) return inf;
    h.replaceFront(Rat(BigInt(ri.n+1), BigInt(ri.n+1-ri.r), ri.n+1, ri.r));
  }

  return d;
}

struct Rat
{
  BigInt num, den;
  int n, r;

  auto opCmp(Rat b)
  {
    auto c = num*b.den - b.num*den;
    return c == 0 ? 0 : c < 0 ? -1 : 1;
  }
}